The Challenge is a mercury mine located in San Mateo county, California.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Challenge MRDS details
Site Name
Primary: Challenge
Secondary: Farm Hill No. 2
Secondary: Redwood City
Commodity
Primary: Mercury
Location
State: California
County: San Mateo
District: Emerald Lake
Land Status
Not available
Holdings
Not available
Workings
Type: Surface
Ownership
Owner Name: Oddstad, Jr., A. F.
Production
Year: 1962
Time Period: To 1962
Material type: HG
Description: Cp_Grade: ^6-10 Lb/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1955
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silica Carbonate Alteration Of Serpentine
Rocks
Name: Serpentinite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Name: Serpentinite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Ore: Metacinnabar
Ore: Mercury
Ore: Cinnabar
Comments
Comment (Workings): OPERATIONS TERMINATED IN 1958 SO AREA COULD BE MADE INTO A HOUSING DEVELOPMENT
Comment (Geology): SERPENTINE OCCURS AS FLOAT ; GEOL.DESC: ORE IN SLUMP ROCK AND ALLUVIUM
Comment (Location): LOCATED AT APPROX. CENTER OF SECTION
Comment (Production): NOW PART OF A HOUSING DEVELOPMENT
References
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252
Reference (Deposit): DAVIS, F.F., 1955, MINES AND MINERAL RESOURCES OF SAN MATEO COUNTY, CALIF.: CJMG, V. 51, P. 413-414
Reference (Production): USBM DATA
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
